Cancer elbow pain can be characterized as persistent, more intense and progressive aggravation. Cancer is a malignant disease caused by heredity, gene mutation, etc. When the tumor occurs at the elbow or bone metastasis occurs here; and when the cancer cells invade the related nerves, etc., it can lead to pain in the elbow area. The pain caused by cancer can be characterized by no obvious triggers, persistent severe pain and progressive aggravation. In addition, it is often accompanied by systemic manifestations such as fever, fatigue and lethargy. In addition to cancer, non-cancer factors such as muscle strain and “tennis elbow” can also cause elbow pain. Therefore, when discomfort occurs, one should consult a doctor in a timely manner, identify the cause of the disease, and treat it in a timely manner, so as to avoid delaying the disease.